:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --bg-elevated: #ffffff;
  --bg-muted: #eceff4;
  --bg-code: #e8ebf0;
  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.16);
  --text: #0f172a;
  --text-muted: #475569;
  --accent: #0d8f6f;
  --accent-hover: #0a7a5f;
  --accent-soft: rgba(13, 143, 111, 0.12);
  --accent-text: #ffffff;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 28px 80px rgba(15, 23, 42, 0.14);
  --radius: 12px;
  --radius-pill: 999px;
  --max-width: 1180px;
  --font: "SF Pro Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --header-height: 4rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090b10;
    --bg-elevated: #11141b;
    --bg-muted: #171b24;
    --bg-code: #0d1118;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text: #e8eaef;
    --text-muted: #9aa3b2;
    --accent: #34d399;
    --accent-hover: #6ee7b7;
    --accent-soft: rgba(52, 211, 153, 0.12);
    --accent-text: #052e1f;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
    --shadow-strong: 0 32px 100px rgba(0, 0, 0, 0.45);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--accent-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  background: var(--bg-elevated);
  color: var(--text);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(16px);
}

@supports not (background: color-mix(in srgb, white 50%, transparent)) {
  .site-header {
    background: var(--bg);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--bg-elevated);
    backdrop-filter: none;
  }
}

.nav {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--text);
  text-decoration: none;
}

.brand-icon {
  display: block;
  width: 2rem;
  height: 2rem;
  border-radius: 0.55rem;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}

.umbra-section-head {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: none;
}

.umbra-app-icon {
  flex-shrink: 0;
  width: 5rem;
  height: 5rem;
  border-radius: 1rem;
  object-fit: cover;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 0.55rem;
  background: var(--bg-elevated);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-size: 0.9375rem;
}

.nav-links a {
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.site-banner-wrapper {
  max-width: var(--max-width);
  margin: 1.75rem auto 0;
  padding: 0 1.5rem;
}

.site-banner-container {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-banner-container:hover {
  box-shadow: var(--shadow-strong);
}

.site-banner-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 2.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 2.5rem;
}

.hero-copy {
  max-width: 34rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 4.8vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.hero p {
  margin: 0 0 1.75rem;
  max-width: 32rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
}

.hero p code,
.umbra-card code {
  font-family: var(--mono);
  font-size: 0.88em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  transition:
    transform 0.15s var(--ease),
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    color 0.2s var(--ease);
}

.button:active {
  transform: scale(0.98);
}

.button-primary {
  background: var(--accent);
  color: var(--accent-text);
  box-shadow: var(--shadow);
}

.button-primary:hover {
  background: var(--accent-hover);
  color: var(--accent-text);
  text-decoration: none;
}

.button-secondary {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--border-strong);
  background: var(--bg-muted);
  color: var(--text);
  text-decoration: none;
}

.hero-shot {
  margin: 0;
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-strong);
}

.hero-shot img {
  display: block;
  width: 100%;
}

.stack-strip {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stack-label {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.stack-logos {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stack-logos img {
  display: block;
  opacity: 0.72;
  transition: opacity 0.2s var(--ease);
}

.stack-logos a:hover img,
.stack-logos img:hover {
  opacity: 1;
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2rem;
}

.section h2,
.install-copy h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.section-head p,
.install-copy p {
  margin: 0;
  color: var(--text-muted);
  max-width: 42rem;
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.bento-cell {
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.bento-cell h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.bento-cell p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.bento-engine {
  grid-column: span 7;
  background:
    linear-gradient(145deg, var(--accent-soft), transparent 55%),
    var(--bg-elevated);
}

.bento-intel {
  grid-column: span 5;
}

.bento-workbench {
  grid-column: span 5;
  background: var(--bg-muted);
}

.bento-languages {
  grid-column: span 7;
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
}

.umbra-bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.umbra-card {
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.umbra-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.umbra-card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.umbra-card p:last-child {
  margin-bottom: 0;
}

.umbra-java {
  grid-column: span 8;
  background:
    linear-gradient(145deg, var(--accent-soft), transparent 55%),
    var(--bg-elevated);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
}

.umbra-http {
  grid-column: span 4;
  background: var(--bg-muted);
}

.umbra-markdown {
  grid-column: span 6;
}

.umbra-git {
  grid-column: span 6;
  background: var(--bg-muted);
}

.umbra-agent {
  grid-column: span 6;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent 55%),
    var(--bg-elevated);
  border-color: color-mix(in srgb, var(--accent) 20%, var(--border));
}

.umbra-workbench {
  grid-column: span 12;
}

.feature-list {
  margin: 0 0 1rem;
  padding-left: 1.15rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.feature-list li {
  margin-bottom: 0.35rem;
}

.feature-list li:last-child {
  margin-bottom: 0;
}

.feature-list-compact {
  columns: 2;
  column-gap: 1.5rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.showcase-section .section-head {
  margin-bottom: 1.75rem;
}

.showcase-primary {
  margin: 0 0 1rem;
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-strong);
}

.showcase-primary img {
  display: block;
  width: 100%;
}

.showcase-primary figcaption,
.screenshot-card figcaption {
  padding: 0.85rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.screenshot-card {
  margin: 0;
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

.screenshot-card:nth-child(1) {
  grid-column: span 7;
}

.screenshot-card:nth-child(2) {
  grid-column: span 5;
}

.screenshot-card:nth-child(3),
.screenshot-card:nth-child(4),
.screenshot-card:nth-child(5),
.screenshot-card:nth-child(6) {
  grid-column: span 6;
}

.screenshot-card img {
  display: block;
  width: 100%;
}

.install-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2.5rem;
  align-items: start;
}

.install-copy p {
  margin-bottom: 1.75rem;
}

.install-copy code {
  font-family: var(--mono);
  font-size: 0.88em;
}

.spec-list {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.spec-list div {
  display: grid;
  gap: 0.2rem;
}

.spec-list dt {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.spec-list dd {
  margin: 0;
  font-size: 0.98rem;
}

.spec-list dd a {
  color: var(--accent);
}

.code-panels {
  display: grid;
  gap: 1rem;
}

.code-panel {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-code);
}

.code-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 70%, var(--bg-code));
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.8rem;
}

.copy-btn {
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    color 0.2s var(--ease),
    transform 0.15s var(--ease);
}

.copy-btn:hover {
  color: var(--text);
}

.copy-btn:active {
  transform: scale(0.98);
}

.copy-btn.is-copied {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.code-block {
  margin: 0;
  padding: 1rem 1.05rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.55;
}

.code-block code {
  white-space: pre;
}

.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--text-muted);
}

.footer a:hover {
  color: var(--text);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
}

.reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition:
      opacity 0.55s var(--ease),
      transform 0.55s var(--ease);
  }

  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 3.5rem;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-visual {
    order: -1;
  }

  .bento-engine,
  .bento-intel,
  .bento-workbench,
  .bento-languages,
  .umbra-java,
  .umbra-http,
  .umbra-markdown,
  .umbra-git,
  .umbra-agent,
  .umbra-workbench {
    grid-column: span 12;
  }

  .feature-list-compact {
    columns: 1;
  }

  .install-layout {
    grid-template-columns: 1fr;
  }

  .screenshot-card,
  .screenshot-card:nth-child(1),
  .screenshot-card:nth-child(2),
  .screenshot-card:nth-child(3),
  .screenshot-card:nth-child(4),
  .screenshot-card:nth-child(5),
  .screenshot-card:nth-child(6) {
    grid-column: span 12;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 0.65rem 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .umbra-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .stack-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .section {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}